A Method of Computational Correction for Optical Distortion in Head-Mounted Displays

Optical distortion is one of the optical aberrations of optical systems that do not affect image sharpness. Thus, it can be beneficial to correct optical distortion computationally rather than optically. Computational correction versus optical correction will generally yields lighter optical systems. This is of great importance for head-mounted displays where the weight of the viewer needs to be minimized for efficient performance, safety, and optimum duration of usage. We shall describe in this paper, one method of computational correction that consists in warping polygon vertices. It is the case, however, that the algorithms given can be easily rewritten to handle pixels rather than vertices warpings.